I read that once he joined the FB Class of 22 Admitted Student Group, the cat was out of the bag then. I was told that someone posted on the Chinese equivalent of CC a screen shot of his greeting to the group.
There have been and there are rich kids at U of C but none of them is as high profile as Rory. Of course we all wish him having an wonderful education here. I was told that his intended major would be political science/sociology and so he should be in the right place as U of C Social Science Division is definitely world class.